Core 2 Motherboard Complete List - With Hardware Recommendations for a HD HTPC - Page 4 - AVS Forum
Forum Jump: 
 
Thread Tools
Old 01-09-2007, 10:59 PM
Senior Member
 
crabnebula's Avatar
 
Join Date: Jan 2005
Location: Montreal, Canada
Posts: 389
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
renethx,

I simply wanted to thank you for the incredible wealth of information in this thread. It is a tremendous contribution that is very useful and highly appreciated.

Best Regards,

crabnebula
crabnebula is offline  
Sponsored Links
Advertisement
 
Old 01-10-2007, 04:27 PM
AVS Special Member
 
jkaiser's Avatar
 
Join Date: Aug 2001
Location: South Central Wisconsin
Posts: 3,492
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
More Core 2 duos to choose from.

http://www.anandtech.com/cpuchipsets...oc.aspx?i=2903

Failure is not an option. It comes bundled with every Microsoft product
jkaiser is offline  
Old 01-11-2007, 03:57 PM
Member
 
prostuff1's Avatar
 
Join Date: Jul 2006
Posts: 46
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by jkaiser View Post

More Core 2 duos to choose from.

http://www.anandtech.com/cpuchipsets...oc.aspx?i=2903

I read about those chips adn I have to say that it is making me wait for a little while. I want a C2D based HTPC but i really can't justify spending that much on a chip (not to mention the motherboard selection is not nearly as good. I need a board that has DVI out on it without using a bracket. I don't need anything fancy just somehting inline with the nvidia 6150 chipset, but for intel C2D
prostuff1 is offline  
Old 01-12-2007, 01:04 PM
Advanced Member
 
ewitte's Avatar
 
Join Date: Feb 2004
Posts: 612
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 11
~80% utilization with a E6600 and 8800GTX? Does overclocking help THAT much? Of all the H.264 demos I've tried I have yet to see one go over the 20's. Although I've never had a E6x00 running its 24/7 speed less than 3.4Ghz. If I were still running water I'd easily do 3.8Ghz 24/7.
ewitte is offline  
Old 01-13-2007, 04:22 AM - Thread Starter
AVS Club Gold
 
renethx's Avatar
 
Join Date: Jan 2006
Posts: 16,243
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 241 Post(s)
Liked: 389
Quote:
Originally Posted by jkaiser View Post

More Core 2 duos to choose from.

http://www.anandtech.com/cpuchipsets...oc.aspx?i=2903

Core 2 Duo E4300 (1.8GHz, FSB 800MT/s, multiplier x9, $163) seems to be the best bang for the buck. It runs at 2.4GHz (the same frequency as E6600) easily. What you need to do is just set the motherboard's FSB to 266MHz. There is no need to tweak the BIOS other than that. If you are willing to raise the CPU voltage, it should be able to run at 3.3-3.4GHz, a much higher frequency than Core 2 Extreme X6800. At this speed there will be no frame drops when playing back H.264 contents of the highest bitrate even if there is no decode acceleration in video card (AnandTech - HD Video Playback: H.264 Blu-ray on the PC, Figure: Maximum CPU Utilization During Playback).

E4300 lacks the support Virtualization Technology and has a smaller L2 cache (2MB vs. 4MB of E6600; these do not matter for most of users though), but has the same overclocking potential as E6600 with half the price ($163 vs. $316).

Core 2 Duo E4400 (2.0GHz, FSB 800MT/s, multiplier x10), to be released in Q2 2007, will be even better in overclocking. At that time E4300 will cost $113, E4400 $133, and E6600 $224.
renethx is offline  
Old 01-15-2007, 11:18 PM
Newbie
 
pigtail111's Avatar
 
Join Date: Jan 2007
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Bought abit il-90mv MB for my yonah t6700 CPU from newegg based on your rich information. It works perfectly! Now I am having a modT HTPC running happily!
pigtail111 is offline  
Old 01-16-2007, 07:45 AM
Newbie
 
stkro's Avatar
 
Join Date: Jan 2007
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
From what i can find in various reviews, it looks like the ASUS P5W DH Deluxe and the ASUS P5B Deluxe needs a small fan to cool the heatexchanger connected to the bridge HS if you go for watercooling or passive cooling. This doesn't work for me as im using the passive cooling on the mCubed Classic case. Is there any good 965/975 board around that doesn't require that much cooling of the the mosfet heatsinks?
stkro is offline  
Old 01-16-2007, 08:15 AM
Advanced Member
 
ewitte's Avatar
 
Join Date: Feb 2004
Posts: 612
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 11
Quote:
Originally Posted by stkro View Post

From what i can find in various reviews, it looks like the ASUS P5W DH Deluxe and the ASUS P5B Deluxe needs a small fan to cool the heatexchanger connected to the bridge HS if you go for watercooling or passive cooling. This doesn't work for me as im using the passive cooling on the mCubed Classic case. Is there any good 965/975 board around that doesn't require that much cooling of the the mosfet heatsinks?

Those boards don't require mosfet cooling. Its there because of the heatpipe attached to the northbridge. I believe there are passive heatsinks for the NB that work just fine. You just have to rip out all the heatpipe stuff. I wouldn't overclock much without at least a tiny fan on the northbridge.
ewitte is offline  
Old 01-16-2007, 03:57 PM
Advanced Member
 
dabl's Avatar
 
Join Date: May 2003
Location: Indianapolis, IN
Posts: 507
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by renethx View Post

Core 2 Duo E4300 (1.8GHz, FSB 800MT/s, multiplier x9, $163) seems to be the best bang for the buck. It runs at 2.4GHz (the same frequency as E6600) easily. What you need to do is just set the motherboard's FSB to 266MHz. There is no need to tweak the BIOS other than that. If you are willing to raise the CPU voltage, it should be able to run at 3.3-3.4GHz, a much higher frequency than Core 2 Extreme X6800. At this speed there will be no frame drops when playing back H.264 contents of the highest bitrate even if there is no decode acceleration in video card (AnandTech - HD Video Playback: H.264 Blu-ray on the PC, Figure: Maximum CPU Utilization During Playback).

E4300 lacks the support Virtualization Technology and has a smaller L2 cache (2MB vs. 4MB of E6600; these do not matter for most of users though), but has the same overclocking potential as E6600 with half the price ($163 vs. $316).

Core 2 Duo E4400 (2.0GHz, FSB 800MT/s, multiplier x10), to be released in Q2 2007, will be even better in overclocking. At that time E4300 will cost $113, E4400 $133, and E6600 $224.

Thank you Rene, extremely helpful in decision making.
dabl is offline  
Old 01-16-2007, 04:22 PM
AVS Special Member
 
Valnar's Avatar
 
Join Date: Aug 2000
Location: Cleveland, OH
Posts: 1,808
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 11
Yes, it does seem to be the current overclocker's dream. On other overclocking forums it is being discussed daily. Just remember (everybody.... not singling anyone out) that overclocking and HTPC's are not always a good idea. Our PC's get hot enough to require loud cooling without the extra burden of overclocking. I tend towards the cool & silent crowd, which since an HTPC is aimed to replace a STB, is usually a good idea.

This forum is wonderful, and without a doubt my favorite on the 'net. But the rest of my HTPC advice is gathered from the likes of silentpcreview.com, not [H].

-Robert
Valnar is offline  
Old 01-17-2007, 02:22 AM - Thread Starter
AVS Club Gold
 
renethx's Avatar
 
Join Date: Jan 2006
Posts: 16,243
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 241 Post(s)
Liked: 389
Heat dissipation is proportional to the square of the applied voltage (P = V^2/R). So overclocking does not necessarily imply a higher heat output. X-bit labs reported that E4300 could run stably at 2.97GHz = 330MHz x 9, faster than the default speed 2.93GHz of X6800, with the default voltage 1.325V, meaning it still stays cool.

E4300 was able to run at 3.38GHz = 375MHz x 9 with the voltage 1.468V at the AnandTech test. Total system power consumption at load was

E4300 (1.80GHz): 171W
E6600 (2.40GHz): 203W
X6800 (2.93GHz): 203W
E4300 (3.38GHz): 209W

That's not particularly bad.

BTW the advantage of E4300 over E6300 is its higher multiplier of x9 (vs. x7). For E6300 to run at 3.38GHz, the motherboard's FSB need to be raised to 3.38GHz/7 = 483MHz perhaps with a higher NB voltage (another source of high heat output) that not every motherboard is capable of.

Update

The forumula P = V^2/R is not correct. See Post #115.
renethx is offline  
Old 01-17-2007, 05:12 AM
Newbie
 
stkro's Avatar
 
Join Date: Jan 2007
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by ewitte View Post

Those boards don't require mosfet cooling. Its there because of the heatpipe attached to the northbridge. I believe there are passive heatsinks for the NB that work just fine. You just have to rip out all the heatpipe stuff. I wouldn't overclock much without at least a tiny fan on the northbridge.

Ok, thx. No need to overclock and I'll just use a chipset heatpipe block for the mCubed case then.
stkro is offline  
Old 01-19-2007, 02:28 PM
Member
 
jetcobra's Avatar
 
Join Date: Mar 2003
Location: Los Angeles
Posts: 133
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I can get the AMD Athlon 64 X2 DUAL-CORE 4200+ with an ECS C51GM-M motherboard now for $179 total - would this work with a Sapphire Radeon X1600 PRO HDMI PCI Express 256MB graphics card to allow me to use the XBOX 360 addon HD DVD drive?

I'm trying to rebuild my original HTPC that I've been using with a MyHD card.

Thanks and this is a great thread!
jetcobra is offline  
Old 01-19-2007, 09:46 PM - Thread Starter
AVS Club Gold
 
renethx's Avatar
 
Join Date: Jan 2006
Posts: 16,243
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 241 Post(s)
Liked: 389
Quote:
Originally Posted by jetcobra View Post

I can get the AMD Athlon 64 X2 DUAL-CORE 4200+ with an ECS C51GM-M motherboard now for $179 total - would this work with a Sapphire Radeon X1600 PRO HDMI PCI Express 256MB graphics card to allow me to use the XBOX 360 addon HD DVD drive?

Would work. However a few cautions:
  • The motherboard's BIOS offers absolutely no overclocking options. As X2 4200+ can be overclocked to the level of X2 4600+ (2.4GHz) or X2 5000+ (2.6GHz) easily, I would choose a motherboard with mild overclocking options for future headroom.
  • The onboard audio is ALC655 AC'97 codec. I would choose a motherboard with a HD audio codec.
  • LAN is only 10/100Mbps if LAN speed matters to you.
ASRock ALiveNF6G-DVI is not as cheep as ECS C51GM-M, but is much better in the above respects. And the abit 6150 board is near perfect.
renethx is offline  
Old 01-22-2007, 10:25 AM
Member
 
pietnoeck's Avatar
 
Join Date: Feb 2002
Location: belgium
Posts: 57
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Is overclocking advisable for a HD-HTPC use ?
I'm looking at the 4300 because of its OC capacities.
But if not I would go for a 6400 core2duo.

Which one is best given there is only a 40 $ pricedifference where i live
pietnoeck is offline  
Old 01-22-2007, 10:43 AM
AVS Special Member
 
archibael's Avatar
 
Join Date: Jul 2002
Location: Phoenix, AZ
Posts: 4,098
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
For HTPC, overclocking is a mixed bag. The Core 2 Duos overclock very stably, and you shouldn't encounter too many problems along those lines. However, when you OC, you introduce higher thermals than the part at stock frequency and voltage, and this could drive your cooling needs up to a higher priced cooler or higher fan speeds (noisier) or both.

In a gaming or office system where noise is irrelevant, I'd go with an OC. For a system where silence and low-power is golden, I'm actually considering underclocking.

I do not speak officially in any sense for
Intel Corp., Technology Manufacturing Group
but I do work there.
archibael is offline  
Old 01-22-2007, 10:44 AM - Thread Starter
AVS Club Gold
 
renethx's Avatar
 
Join Date: Jan 2006
Posts: 16,243
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 241 Post(s)
Liked: 389
Quote:
Originally Posted by pietnoeck View Post

Is overclocking advisable for a HD-HTPC use ?
I'm looking at the 4300 because of its OC capacities.
But if not I would go for a 6400 core2duo.

Which one is best given there is only a 40 $ price difference where i live

As I wrote in Post #101, there is no problem at all in overclocking CPU unless you raise the CPU voltage (that would cause a higher heat output).

Either processor should be fine. I prefer E4300 to E6400 because of the price and the easiness of OC. For example if you want to raise the clock speed to the level of X6800, you need to raise FSB to:

E4300: 2.93GHz/9 = 326MHz,
E6400: 2.93GHz/8 = 367MHz.
renethx is offline  
Old 01-22-2007, 03:12 PM
Member
 
goob's Avatar
 
Join Date: Dec 2005
Posts: 46
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Does using the E4300 allow you to go with cheaper RAM? If the FSB doesn't need to be as high for the same OC, it should give us more options with lower rated (4200, 5300 etc) RAM modules, which will bring the system cost down as well.

I was looking at the Corsair ValueSelect series or similar.
goob is offline  
Old 01-22-2007, 04:18 PM
Member
 
pietnoeck's Avatar
 
Join Date: Feb 2002
Location: belgium
Posts: 57
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Thx, Then i'll go for the 4300.
Does it need any extra cooling, besides the stock-cooling ?
I'll be using the ASUS P5B Deluxe for a MB
pietnoeck is offline  
Old 01-22-2007, 06:04 PM
Member
 
jetcobra's Avatar
 
Join Date: Mar 2003
Location: Los Angeles
Posts: 133
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by renethx View Post

Would work. However a few cautions:
  • The motherboard's BIOS offers absolutely no overclocking options. As X2 4200+ can be overclocked to the level of X2 4600+ (2.4GHz) or X2 5000+ (2.6GHz) easily, I would choose a motherboard with mild overclocking options for future headroom.
  • The onboard audio is ALC655 AC'97 codec. I would choose a motherboard with a HD audio codec.
  • LAN is only 10/100Mbps if LAN speed matters to you.
ASRock ALiveNF6G-DVI is not as cheep as ECS C51GM-M, but is much better in the above respects. And the abit 6150 board is near perfect.

My main interest is having something that will reliably work with the XBOX HD-DVD addon drive. That's all that this system will be doing, so will the video work without problem? I plan to add a better sound card, so the audio is not a concern and it's not going to be on a LAN, so that's no issue either. Thanks again for your help.
jetcobra is offline  
Old 01-22-2007, 09:09 PM - Thread Starter
AVS Club Gold
 
renethx's Avatar
 
Join Date: Jan 2006
Posts: 16,243
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 241 Post(s)
Liked: 389
Quote:
Originally Posted by goob View Post

Does using the E4300 allow you to go with cheaper RAM? If the FSB doesn't need to be as high for the same OC, it should give us more options with lower rated (4200, 5300 etc) RAM modules, which will bring the system cost down as well.

I was looking at the Corsair Value Select series or similar.

It depends on the motherboard you choose and the CPU frequency you intend to achieve. A memory module DDR2-533 is guaranteed to run stably at the effective frequency 533MHz (the real frequency 266MHz; recall DDR, double data rate), DDR2-667 at 667MHz, etc. On the other hand, if you look at BIOS, you will see DRAM frequency options 400MHz, 533MHz, 667MHz and 800MHz. (The option 400MHz is found only in 945P/G motherboards.) They are not the actual DRAM frequency but merely the memory multiplier. The formula is the following:
  • 400MHz = multiplier 1.5 = FSB: DRAM ratio 4:3
  • 533MHz = multiplier 2 = FSB: DRAM ratio 1:1
  • 667MHz = multiplier 2.5 = FSB: DRAM ratio 4:5
  • 800MHz = multiplier 3 = FSB: DRAM ratio 2:3

The actual memory frequency = FSB x memory multiplier

(In GIGABYTE motherboards, multiplier is explicitly given instead of a cryptic DRAM frequency.) The default FSB is 200MHz (or 800MT/s) for E4xxx and 266MHz (or 1066MT/s) for E6xxx. (FSB is QDR, quadruple data rate, or quad pump, so MT(transfer)/s = 4 x MHz is also used.) For example, if you select FSB = 300MHz and DRAM frequency = 667MHz, the actual frequency = 300MHz x 2.5 = 750MHz, so you need DDR2-800 modules.

P965 motherboard

The minimum selectable multiplier is 2 (= DDR2-533). With this multiplier the relation between the memory speed and the maximum theoretically possible FSB/CPU frequency is the following:
  1. With DDR2-533 memory
    • FSB: 553MHz/2 = 266MHz
    • CPU:
      • 266MHz x 7 = 1.86GHz for E6300
      • 266MHz x 8 = 2.13GHz for E4200 & E6400
      • 266MHz x 9 = 2.40GHz for E4300 & E6600
      • 266MHz x 10 = 2.66GHz for E4400 & E6700

  2. With DDR2-667 memory
    • FSB: 667MHz/2 = 333MHz
    • CPU:
      • 333MHz x 7 = 2.33GHz for E6300
      • 333MHz x 8 = 2.66GHz for E4200 & E6400
      • 333MHz x 9 = 3.00GHz for E4300 & E6600
      • 333MHz x 10 = 3.33GHz for E4400 & E6700

  3. With DDR2-800 memory
    • FSB: 800MHz/2 = 400MHz
    • CPU:
      • 400MHz x 7 = 2.80GHz for E6300
      • 400MHz x 8 = 3.20GHz for E4200 & E6400
      • 400MHz x 9 = 3.60GHz for E4300 & E6600
      • 400MHz x 10 = 4.00GHz for E4400 & E6700
P945 motherboard

The minimum selectable multiplier is 1.5 (= DDR2-400). With this multiplier the relation between the memory speed and the maximum theoretically possible FSB/CPU frequency is the following:
  1. With DDR2-533 memory
    • FSB: 533MHz/1.5 = 355MHz
    • CPU:
      • 355MHz x 7 = 2.49GHz for E6300
      • 355MHz x 8 = 2.84GHz for E4200 & E6400
      • 355MHz x 9 = 3.20GHz for E4300 & E6600
      • 355MHz x 10 = 3.55GHz for E4400 & E6700

  2. With DDR2-667 memory
    • FSB: 667MHz/1.5 = 444MHz
    • CPU:
      • 444MHz x 7 = 3.11GHz for E6300
      • 444MHz x 8 = 3.55GHz for E4200 & E6400
      • 444MHz x 9 = 4.00GHz for E4300 & E6600
      • 444MHz x 10 = 4.44GHz for E4400 & E6700

  3. With DDR2-800 memory
    • FSB: 800MHz/1.5 = 533MHz
    • CPU:
      • 533MHz x 7 = 3.173GHz for E6300
      • 533MHz x 8 = 4.26GHz for E4200 & E6400
      • 533MHz x 9 = 4.80GHz for E4300 & E6600
      • 533MHz x 10 = 5.33GHz for E4400 & E6700
Of course most P965 motherboards need a NB voltage bump for FSB over ~350MHz and most P945 motherboards cannot run at FSB over ~350MHz. And CPU itself need a voltage bump to run stably above ~2.9GHz and perhaps cannot run at above ~3.6GHz.

BTW many DDR2-667 modules except Corsair Value Select (!) are able to run at the speed of DDR2-800 (800MHz effective frequency) or more and you will have a more headroom (source: AnandTech - Intel P965: DDR2-667 Memory Performance ).
renethx is offline  
Old 01-22-2007, 09:16 PM - Thread Starter
AVS Club Gold
 
renethx's Avatar
 
Join Date: Jan 2006
Posts: 16,243
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 241 Post(s)
Liked: 389
Quote:
Originally Posted by pietnoeck View Post

Thx, Then i'll go for the 4300.
Does it need any extra cooling, besides the stock-cooling ?
I'll be using the ASUS P5B Deluxe for a MB

As I said repeatedly, you don't need an extra cooling unless you bump the CPU/NB voltage (you can't get heat out of nothing!).

Update

The statement "you can't get heat out of nothing!" is wrong. See Post #115.
renethx is offline  
Old 01-22-2007, 09:18 PM - Thread Starter
AVS Club Gold
 
renethx's Avatar
 
Join Date: Jan 2006
Posts: 16,243
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 241 Post(s)
Liked: 389
Quote:
Originally Posted by jetcobra View Post

My main interest is having something that will reliably work with the XBOX HD-DVD addon drive. That's all that this system will be doing, so will the video work without problem? I plan to add a better sound card, so the audio is not a concern and it's not going to be on a LAN, so that's no issue either. Thanks again for your help.

The ECS board should be fine for your purpose.
renethx is offline  
Old 01-23-2007, 06:34 AM
AVS Special Member
 
jimwhite's Avatar
 
Join Date: Sep 2001
Location: Saint Petersburg, FL USA
Posts: 5,372
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by renethx View Post

As I said repeatedly, you don't need an extra cooling unless you bump the CPU/NB voltage (you can't get heat out of nothing!).

not quite true.... though heat output has a first order relationship to applied voltage at a given clock frequency, heat output also has a higher order dependance on clock frequency at a given applied voltage.... you get more work done, heat must go up.... in technical terms it's a result of switching losses which increase as frequency goes up....


Jim White
St. Petersburg, FL
jimwhite is offline  
Old 01-23-2007, 11:18 AM - Thread Starter
AVS Club Gold
 
renethx's Avatar
 
Join Date: Jan 2006
Posts: 16,243
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 241 Post(s)
Liked: 389
Quote:
Originally Posted by jimwhite View Post

not quite true.... though heat output has a first order relationship to applied voltage at a given clock frequency, heat output also has a higher order dependence on clock frequency at a given applied voltage.... you get more work done, heat must go up.... in technical terms it's a result of switching losses which increase as frequency goes up....


You are absolutely right. I don't want to spread wrong information, so let me make a correction. Switching loss - in plain words, it is the amount of heat emitted from a transistor when it goes from one state to the other (at the order of 10^(-16) joule). CPU consists of hundreds of millions of transistors and each transistor would emit 1 x 10^9 times that amount of heat per second if the CPU frequency were 1GHz and 2 x 10^9 times that amount if the CPU frequency were 2GHz. Thus the total amount of heat is proportional to the frequency and we have the following simple formula:

Power Consumption = Cdynamic x V^2 x Frequency

where Cdynamic is a constant dynamic capacity that is determined by the CPU microarchitecture and depends on the number of transistors and their activity during CPU operation (source: Intel Developer Forum; cf. X-bit labs - Getting Ready to Meet Intel Core 2 Duo).

Let's go back to the original question by pietnoeck: if any extra cooling is needed. I have not seen the stock cooler of E4300. As already mentioned the power consumption of the overclocked E4300 (3.38GHz) with the +0.143V voltage increase was not much different from that of the non-overclocked E6600 (2.4GHz). The overclocked E4300 (say ~2.9GHz) without voltage raised would run even cooler than E6600. The major reason for such a low power consumption is the smaller size of the L2 cache, hence the smaller number of transistors:
  • Allendale core (2MB L2 cache; E4xxx, E6300, E6400): 167 million
  • Conroe core (4MB L2 cache; E6600 and higher): 291 million
Hence if the stock cooler is the same as that of E6600, no extra cooling is necessary. Otherwise you'd better use a retail CPU cooler. Personally I (and perhaps most of you) would use a retail cooler in terms of noise and cooling efficiency whether the CPU is overclocked or not.

BTW it is not clear how the smaller L2 cache affects the video playback performance. Performance comparison with various applications is given in L2 Cache: 4MB or 2MB?. It could be that the performance difference in video playback between E4300 @2.40GHz and E6600 @2.40GHz is only a few percent and practically negligible. Or it could be that the difference is as much as 10% and E4300 needs to run at 2.6GHz to equal E6600 @2.4GHz (Yes, increasing the clockrate by a few hundred MHz can compensate for the lack of 2MB L2 cache!). Even if the latter case were true, E4300 still has a great value.
renethx is offline  
Old 01-23-2007, 06:36 PM
Member
 
goob's Avatar
 
Join Date: Dec 2005
Posts: 46
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by renethx View Post

It depends... snip

Thanks for that. I was assuming a ratio 1:1 for the DRAM as I beleive this is the best performance? If the E4300 FSB is lower for a given OC, then this would put less stress on the RAM at a 1:1 ratio.
But i'll have a look at the Anand site and see what other cheap RAM options there are for good performance.
goob is offline  
Old 01-30-2007, 11:09 AM
Newbie
 
JakBurton's Avatar
 
Join Date: Jan 2007
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
First of all this thread is AWESOME, very informative.

Anyways, I'm building my 1st HTPC that will likely seldom be used for gaming, but will be doing a bit of encoding. I'm considering the following:

Case: Silverstone LC16
Mobo: Asus P5B
CPU: E6600
GPU: GeForce 7950 GT
PSU: Corsair HX520W

My questions are simple.
a) Will I need additional CPU cooling (i.e. a CPU fan, my gut says "YES")?
b) Does anyone have experience with the LC16s. I've read they have issues with sizing. I love this case and I wanted to know if this stuff will fit?

TIA
JakBurton is offline  
Old 01-30-2007, 07:42 PM - Thread Starter
AVS Club Gold
 
renethx's Avatar
 
Join Date: Jan 2006
Posts: 16,243
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 241 Post(s)
Liked: 389
First try to use the stock cooler. If you feel it noisy, replace it with a retail cooler. The CPU temperature should be OK with the stock cooler for mild overclocking.
renethx is offline  
Old 02-02-2007, 10:43 AM
AVS Special Member
 
Axel's Avatar
 
Join Date: Mar 2002
Location: Metro Detroit, MI, USA
Posts: 4,691
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
Liked: 14
renethx;
Wow, just noticed your thread - excellent work! Thank you very much!
____
Axel

Axel is online now  
Old 02-02-2007, 09:03 PM
Member
 
cartwrij's Avatar
 
Join Date: Jun 2005
Posts: 195
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Fantastic thread... I'm pretty much a novice at this, and this was a great place to get started. Thanks!
cartwrij is offline  
 
Thread Tools


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off